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The site location should be at the mark shown -- or very close. Clicking within the map area (or you can drag the 'CW0713' marker) will display the latitude/longitude of that point.
If the displayed location (or elevation) of the weather observing location is incorrect, please drag the marker to the right location (or click in the right location), and then send the updated information. Please note that we are trying to spot either the Stevenson Screen (or equivalent) or the location where the barometric readings are taken.
NOTE: The Registered Location is the location that the station owner provided when they signed up with CWOP. Show location history.
Latitude: dummy (deg min sec), dummy (decimal), dummy (LORAN)
Longitude: dummy (deg min sec), dummy (decimal), dummy (LORAN)
Estimated elevation is dummy metres (dummy feet) from dummy.
Location is dummy (reverse geocoded).
Move marker to new address.
The station (or view from the station) is shown here. You can choose the view direction to see the surroundings. Other information (and somewhat larger images) can be found by clicking on the picture.
You can try to find photographs from the area surrounding the site marker by clicking on Find nearby photographs. (There are some) (There are none) (There may be some) (Automatically loaded if any)
A reasonably recent weather report (17 days ago) received from this station was
CW0713>APRS,TCPXX*,qAX,CWOP-6:@220205z3900.97N/12102.62W_.../...g...t...r000p000P000h..b10171.DsVP
All the means and standard deviations shown below are from the last 28 days. Change analysis period to Last 3 days Last 7 days Last 14 days Last 8 weeks Last 13 weeks Last 26 weeks Last 39 weeks Last 52 weeks
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Latest daily graph:
These values are within range, so your sensor is probably calibrated correctly.
You can look at those for comparison purposes. The average difference between your station and each station below is listed as well. This may allow you to detect local stations which are erroneous. You can also use these numbers to adjust your instruments -- especially if a number of ASOS stations have similar differences to your station. Also, try increasing the analysis period to more than the default 28 days. The difference is only given if both stations report reasonably often during each day. Some stations only report every 6 hours, and this makes the average of less interest. In this case, the average is not displayed. The values reported are the differences between this station and the neighboring station. I.e. if the difference is positive, then this station is reading higher than the neighboring station. Since this station has not been reporting continuously during the analysis period (it missed 22 days out of 28), the offsets below may not be accurate.
You can also subscribe to an RSS feed to tell you when new stations come online in this area. Choose either within
100 miles 
or
250 miles .
For stations covered by your Forecast Office: Sacramento (STO),Reno (REV) .
| Site | Distance | Location | Barometer | Temperature | Dewpoint | ||
|---|---|---|---|---|---|---|---|
| GW1055 | 8.5 miles | Southwest | Auburn, CA, US (lat 38.9458°, long -121.1732°, altitude 866 metres) | -0.2mb | |||
| GW4338 | 9.3 miles | South | AUBURN, CA, US (lat 38.8838°, long -121.0700°, altitude 431 metres) | 0.4mb | |||
| DW8862 | 9.3 miles | South | Auburn, CA, US (lat 38.8838°, long -121.0700°, altitude 431 metres) | 0.7mb | |||
| FW9018 | 14.8 miles | North | Grass Valley, CA, US (lat 39.2269°, long -121.0932°, altitude 694 metres) | -0.6mb | |||
| GW0346 | 15.0 miles | South | Loomis, CA, US (lat 38.8072°, long -121.1173°, altitude 177 metres) | 1.0mb | |||
| EW9947 | 15.5 miles | North | Nevada City, CA, US (lat 39.2385°, long -121.0058°, altitude 966 metres) | 0.8mb | |||
| GW3614 | 17.7 miles | Southwest | ROCKLIN, CA, US (lat 38.8195°, long -121.2555°, altitude 62 metres) | 0.4mb | |||
| GW2618 | 18.6 miles | North | Nevada City, CA, US (lat 39.2790°, long -121.1127°, altitude 670 metres) | -1.0mb | |||
| K6ALF | 19.4 miles | Southwest | Rocklin, CA, US (lat 38.8085°, long -121.2858°, altitude 41 metres) | 1.2mb | |||
| DW7902 | 20.4 miles | West | Wheatland, CA, US (lat 39.0158°, long -121.4225°, altitude 26 metres) | 0.6mb |
The 'MADIS rating' reports on the percentage of observations that pass the MADIS checks. You should aim for two thumbs up!
Degrees Minutes Seconds: VWS/VWSAPRS, WeatherLink 5.5, WeatherLink (5.2-5.4), WeatherView (Linux)
Decimal degrees: FreeWX, WeatherView32 (PC application)
LORAN: WeatherDisplay, WUHU, Henriksen WServer
CWOP Siting Guide (PDF): This is a guide to siting and operating a CWOP station. This is a must-read document.
Another CWOP Guide (PDF): This is another guide to siting and operating a CWOP station. This is a must-read document.
Urban Siting and Operations (PDF): This is a guide to siting and operating a CWOP station in an urban environment.
APRS WX Message format: This describes the actual format of the messages transmitted that carry WX information.
WXQC Mailing List: This is a mailing list where data quality issues are discussed. Assistance with software configuration can often be found here.
Topo Map Reading Guide: How to read USGS topographic maps, with a good section on reading contours.
Geographically nearby web pages: Use Geourl to find web pages that deal with locations geographically close to this site.
